Puma drag at low revs

Hi my puma has begun to go kind of limp at low revs then after a few seconds gets a new lease of life. Any ideas where to start going to change fuel filter and see how that goes also just had the vacuum pump changed would it be coming from that ??

Possibly the diesel particulate filter needs a regeneration cycle. What is your driving style? does it get a regular sustained 40 - 70mph for 20 minutes or so (so the dpf gets a recycle when the ecm demands it)? A "plodding" driving style or engine not getting up to temperature could prevent a recycle or stop a recycle from completing. If this ain't the problem find someone with a nanocom programmed for Pumas and interrogate for faults (would lend you mine but you are not near).

Look at the boost pipes,

Look at the one by the throttle body, seems to be the ones most peeps forget,

Also a good 1hrs run down the M-way wouldnt do it any harm